Question

Why is the pollution of rivers and lakes a cause of concern

Answer 1

Answer:

This is a big problem as dirty lakes and rivers means that it will become a zone for number of diseases and a breeding place for mosquitoes. If the river is a source of water to the people tere it will be a big problem.

there will be no life in river, it would smell and become a big problem to the people living there.

Answer 2

See this attachment i hope its helpfull to u mate